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Finding the Fourth Proportional to 528,298.29, 729,365.81 and 347,331.33

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Solution

The fourth proportional to 528,298.29, 729,365.81 and 347,331.33 is: 479,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,298.29 : 729,365.81 = 347,331.33 : x
  2. Step 2: Convert to fraction form
    528,298.29/729,365.81 = 347,331.33/x
  3. Step 3: Cross multiply
    528,298.29x = 729,365.81 × 347,331.33
  4. Step 4: Simplify right side
    528,298.29x = 253,331,595,107.17
  5. Step 5: Solve for x
    x = 253,331,595,107.17/528,298.29
  6. Step 6: Final answer
    x = 479,523.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.